<template>
  <div class="left">
    <h1>Left组件</h1>
    <h1>{{$store.state.num}}</h1>
  </div>
</template>

<script>
export default {

}
</script>

<style>
    .left{
        width: 100%;
        height: 200px;
        background-color:orange;
    }
</style>